Katharina Benisch, Bastian Graupner, Dedong Li, Christof Beyer, Addisalem Mitiku, Sebastian Bauer

Transcription

1 Katharina Benisch, Bastian Graupner, Dedong Li, Christof Beyer, Addisalem Mitiku, Sebastian Bauer Institute of Geosciences, University of Kiel, Contact: 6 th Trondheim Carbon Capture and Storage Conference

2 Simulation of CO 2 injection THMC modelling system Motivation Heat transport Thermal Geomechanic Deformation Fluid dynamics Hydraulic Geochemistry Transport und Reactions 2

3 Codes = Scientific open-source code development for coupled Thermo-Hydro- Mechanical-Chemical (THMC) systems in the environment Object-oriented programming Using Finite-Element-Method Schlumberger ECLIPSE widely used multiphase simulator Finite-Difference-Method CO 2 Store option Benefits of the OpenGeoSys-ECLIPSE coupling: benefit from the fast computation time of ECLIPSE Extend the capabilites of the ECLIPSE simulator for modelling CO 2 injection regarding Geochemistry and Geomechanics Using already existing fluid flow models build in ECLIPSE 3

4 parameter Implementation of the coupled code Feedback: Modified Porosity & Permeability Object MultiphaseFlow Multi-Phase-Flow OGS work frame OGS-FEM time loop Object Heat Heat transport Object React Kinetic and equilibrium geochemistry OGS-FEM OpenGeoSys Interface DuMuX Interface ECLIPSE-E100 ECLIPSE-E300 Object Deformation Elasto-(visko)-plastic deform., strain, stress # chem. components times: Object SoluteTransport conservative transport of a species (advection, dispersion, diffusion) ECLIPSE P α S α q α CO 2, sol n e K ρ α P por Kinetic Reactions OGS parameter SUPCRT92 OGS Equilib. Reactions ChemApp parameter Thermodynamic Databases FactSage, HKF, Phreeqc, 4

5 Benchmark 1: Benchmarking 2D Tracer Transport in a 1Phase radial flow field (after Moench and Ogata,1981) Good agreement of the coupled ECLIPSE-GeoSys code with the analytical solution. Differences between the tracer fronts result from different mathematical methods which are used within the codes. 5

6 Benchmark 2: Benchmarking Advective-dominated two phase flow in a homogeneous system (after Buckley and Leverett, 1942) (Paul, 2003) Linear k r -S w -function and p c -S w -function GeoSys: PP formulation ECLIPSE: PS formulation t 1 t 2 t 3 6

7 Benchmark 3: Benchmarking 3D multiphase flow field with CO 2 injection Radial settings (injection left, boundary condition right) Adequate for model development and testing CO 2 injection Breakthrough curves 7

8 Geological Model: Field site application Extend: 29 x 28 km Entire thickness ~ 5000 m Possible Storage Formations: 1) Rhät Sandstone 2) middle Bunter Sandstone (Heese,2009) 8

9 Simulation model Entire thickness ~ 1500 m Discretization: 65 x 111 x 23 cells Szenario: CO 2 injection into the lower storage formation over a period of 20 years (1 Mio tons per year) 70 years post-injective simulation Field site application 1800 m 3300 m 9

10 mol/m³ Geochemical modelling: Characterisation of the storage rock and formation water Field site application Mineral composition Representative radial model Calcite Anhydrite Quartz Fayalite Forsterite K-feldspar Albite Anorthite Brine composition (Heese,2009) Lithology information (Heese,2009) 10

11 Simulation results of the coupled code: 1) Pressure build up and phase propagation Phase propagation after: a) Injection start b) Injection stop Field site application Simulation grid (4 times exaggerated) Pressure change after: a) Injection start b) Injection stop Δ Δ [bar] [bar] 11

12 Simulation results of the coupled code: 2) Geochemical modelling Field site application 10 days CO 2 Saturation CO 2 Dissolution 20 years 90 years 12

13 Simulation results of the coupled code: 2) Geochemical modelling after 90 years Field site application ph Quartz Calcite Porosity 6th Trondheim CCS Conference

14 parameter Feedback: Modified Porosity & Permeability Next steps Further Work Increasing computation efficiency Multiphase flow Geochemistry Mechanical feedback on multiphase flow (OGS ECLIPSE) Further code verification More large scale applications Geochemistry OGS-FEM time loop Object Heat Heat transport Object React Kinetic and equilibrium geochemistry Kinetic Reactions OGS Object MultiphaseFlow Multi-Phase-Flow OGS-FEM OpenGeoSys Interface DuMuX parameter Interface ECLIPSE-E100 ECLIPSE-E300 Object Deformation Elasto-(visko)-plastic deform., strain, stress # chem. components times: Object SoluteTransport conservative transport of a species (advection, dispersion, diffusion) SUPCRT92 Equilib. Reactions ChemApp parameter Thermodynamic Databases FactSage, HKF, Phreeqc, 14

15 This study is funded by the German Federal Ministry of Education and Research (BMBF), EnBW Energie Baden-Württemberg AG, E.ON Energie AG, E.ON Gas Storage AG, RWE Dea AG, Vattenfall Europe Technology Research GmbH, Wintershall Holding AG and Stadtwerke Kiel AG as part of the CO2-MoPa joint project in the framework of the Special Programme GEOTECHNOLOGIEN. Field site application Greetings from Kiel 15